Statistics Test

Result

Statistics Test - 1

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Question 1
1 / -0

The mode of a set of observations is the value which

A
occurs most frequently

B
is central

C
is between maximum and minimum

D
None of these

Solution

By definition, mode is the value which occurs most frequently.
Question 2
1 / -0

The frequency polygon is drawn :

A
by joining the mid points of the class intervals of corresponding rectangles.

B
end points of classes and frequencies.

C
upper limits of classes less than the cumulative frequencies.

D
upper limit of classes.

Solution

Frequency polygons are a graphical representation for understanding the shapes of distributions. They can be drawn by joining the midpoints of the class internals of corresponding rectangles.
Question 3
1 / -0

What is the mode?

A
mode is the middle most value in a set of data.

B
mode is the value that appears most often in a set of data.

C
mode is the maximum value in a set of data.

D
mode is the minimum value in a set of data.

Solution

The value which appears most often in a set of data is known as mode.
Question 4
1 / -0

The mean and median for a unimodel data are 43, 43.4 respectively. Find the mode.

A
43.4

B
42.4

C
44.2

D
49.3

Solution

Mode = 3 Median – 2 Mean
= 3 × 43.4 - 2 × 43
= 130.2 - 86
= 44.2